University of Hertfordshire

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Original languageEnglish
Pages (from-to)77-81
Number of pages5
JournalJournal of Alloys and Compounds
Publication statusPublished - 1 Apr 1994


The study of the carbothermic reduction of a columbite concentrate was carried out to form cemented carbides based on particles of (Nb, Ta)C solid solution bonded together by ferromanganese. The effect of various parameters on the kinetics of reaction were examined. Complete wetting of the carbide phase by the metal was achieved. Metal-matrix composites (MMC) based on (Nb, Ta)C and cast iron were also obtained and the morphology is described. Addition of Ni to the MMC had a profound effect on the microstructure and carbide distribution in the matrix

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